As the name implies, this gun shoots homunculi at enemies. These bizarre, little men start off sleeping on top of the gun in a curled up, fetal position (it's what they're good at). The comfy bed they are sleeping on will, however, catapult them at great velocity forward when fired. Coming out a nice nap annoys anyone, of course, but for homunculi it's more of a bloodthirsty rage.
    Making contact with the enemy does not do much damage by themselves, but the homunculus "bullet" will stay alive for a little while, stomping about and running itself into nearby enemies to do damage. eventually they will get tired and tucker out or dissolve (which is cooler). One by itself can do a decent amount of damage, but having several on screen attacking at the same time could deal quite a bit of damage.
    I understand having a small, naked, faceless humanoid is aesthetically contrary to the rest of the game, so feel free give the homunculi faces. Or make any changes you feel necessary, honestly, I don't care.
   This probably won't win, but either way, I think it's a good and appropriate pun name.